我试图模糊我的SKScene和其中包含的所有SKNode，然后在不应该模糊的顶部添加一个SKShapeNode。
这是我的代码：
import SpriteKit
import GameplayKit
class GameScene: SKScene {
private var label : SKLabelNode?
private var spinnyNode : SKShapeNode?
private var rectangle : SKShapeNode?
private var background : SKSpriteNode?
// This node should not be blurred
private var rectangle1 : SKShapeNode?
override func didMove(to view: SKView) {
self.label = self.childNode(withName: "//helloLabel") as? SKLabelNode
if let label = self.label {
label.alpha = 0.0
label.run(SKAction.fadeIn(withDuration: 2.0))
}
let w = (self.size.width + self.size.height) * 0.05
// Node that will be a child of the scene and that should be blurred
self.rectangle = SKShapeNode.init(rectOf: CGSize.init(width: w*5, height: w*5), cornerRadius: w * 0.3)
if let rectangle = self.rectangle
{
rectangle.fillColor = UIColor.red
addChild(rectangle)
}
// Here I create a subview with a blur effect
let blurEffect = UIBlurEffect(style: UIBlurEffect.Style.light)
let blurEffectView = UIVisualEffectView(effect: blurEffect)
blurEffectView.frame = self.view!.bounds
blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
self.view!.addSubview(blurEffectView)
// Now I want to create a texture by capturing an image of my self.view and transforming the image to SKTexture
let textureImage = image(with: self.view!)
let texture = SKTexture(image: textureImage!)
// I create a node that will have a blurred texture
self.background = SKSpriteNode.init(texture: texture)
if let background = self.background
{
addChild(background)
}
// Now I create a node that should not be blurred, adding it to the blurred node
self.rectangle1 = SKShapeNode.init(rectOf: CGSize.init(width: w*3, height: w*3), cornerRadius: w * 0.3)
if let rectangle1 = self.rectangle1
{
rectangle1.fillColor = UIColor.blue
rectangle1.zPosition = 10
background!.addChild(rectangle1)
// Removing the effect makes everything non-blurred.
// Not removing the effect blurs everything
blurEffectView.removeFromSuperview()
}
}
这是从View创建图像
func image(with view: UIView) -> UIImage?
{
UIGraphicsBeginImageContextWithOptions(view.bounds.size, view.isOpaque, 0.0)
defer { UIGraphicsEndImageContext() }
if let context = UIGraphicsGetCurrentContext() {
view.layer.render(in: context)
let image = UIGraphicsGetImageFromCurrentImageContext()
return image
}
return nil
}
}
我的代码不起作用。根据上面的解释，它要么模糊所有内容，要么不模糊所有内容。
实际上看起来我的背景没有正确初始化。我将其视为大小小于我的self.view的黑色矩形。内部没有捕获的模糊图像。
有人可以帮我吗？
非常感谢！
编辑：
从长远来看，这可行：
import SpriteKit
import GameplayKit
class GameScene: SKScene {
private var label : SKLabelNode!
private var rectangle : SKShapeNode!
private var container : SKSpriteNode!
private var rectangle1 : SKShapeNode!
private var button : SKSpriteNode!
private var effectNode : SKEffectNode!
private var blurNode : SKShapeNode!
override func didMove(to view: SKView)
{
effectNode = SKEffectNode()
let blurFilter = CIFilter(name: "CIGaussianBlur", parameters: ["inputRadius": 20])
effectNode.filter = blurFilter
effectNode.zPosition = 500
addChild(effectNode)
blurNode = SKShapeNode(rect: self.frame)
blurNode.fillColor = .white
blurNode.isHidden = true
effectNode.addChild(blurNode)
self.container = SKSpriteNode()
//self.container.position = CGPoint(x: frame.width/2, y: frame.height/2)
self.container.size = CGSize(width: frame.width, height: frame.height)
self.container.color = UIColor(red: 0/255, green: 100/255, blue: 0/255, alpha: 1)
addChild(container)
self.label = SKLabelNode(text: "HELLO WORLD")
self.label.fontName = "Noteworthy-Bold"
self.label.fontSize = 100
self.label.alpha = 1.0
self.label.color = .red
self.label.zPosition = 2
self.label.position = self.convert(CGPoint(x: 5, y: 400),to: container)
self.container.addChild(self.label)
self.rectangle = SKShapeNode.init(rectOf: CGSize.init(width: 500, height: 500),
cornerRadius: 30)
self.rectangle.fillColor = UIColor.green
self.rectangle.strokeColor = .clear
self.rectangle.position = self.convert(self.rectangle.position, to: container)
self.container.addChild(self.rectangle)
self.button = SKSpriteNode(color: .blue, size: CGSize(width: 300, height: 100))
self.button.position = self.convert(CGPoint(x: 0, y: -400), to: container)
self.button.zPosition = 2
self.button.name = "button"
self.container.addChild(self.button)
}
override func touchesEnded(_ touches: Set, with event: UIEvent?)
{
let touch = touches.first
let positionInScene = touch!.location(in: self)
let allNodes = nodes(at: positionInScene)
for node in allNodes
{
let nodePositionConverted = self.convert(node.position, from: node)
let nodeFrameConverted = CGRect(origin: CGPoint(x:nodePositionConverted.x-node.frame.maxX,
y:nodePositionConverted.y-node.frame.maxY),
size:node.frame.size)
if nodeFrameConverted.contains(positionInScene)
{
if(node == button)
{
addMenu()
}
else if(node == rectangle1)
{
hideMenu()
}
}
}
}
func addMenu()
{
print("POINT A")
blurNode.isHidden = false
let fillTexture = self.view?.texture(from: container, crop: blurNode.frame)
print("POINT B")
blurNode.fillTexture = fillTexture
self.rectangle1 = SKShapeNode.init(rectOf: CGSize.init(width: 300, height: 300), cornerRadius: 30)
self.rectangle1.fillColor = UIColor.blue
self.rectangle1.zPosition = 600
addChild(rectangle1)
}
func hideMenu()
{
blurNode.isHidden = true
blurNode.fillTexture = nil
rectangle1.removeFromParent()
}
}